CN102606740B - Novel rotary sealing structure for rotary shaft - Google Patents
Novel rotary sealing structure for rotary shaft Download PDFInfo
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- CN102606740B CN102606740B CN201110385687.1A CN201110385687A CN102606740B CN 102606740 B CN102606740 B CN 102606740B CN 201110385687 A CN201110385687 A CN 201110385687A CN 102606740 B CN102606740 B CN 102606740B
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- seal ring
- rotating seal
- running shaft
- mounting groove
- rotary
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Abstract
The invention discloses a novel rotary sealing structure for a rotary shaft, which comprises an end cover, the rotary shaft and a main rotary sealing ring. The end cover is provided with a rotary shaft mounting hole and a rotary sealing ring mounting groove, the end of the rotary shaft penetrates in the rotary shaft mounting hole, and the main rotary sealing ring is sleeved to the end of the rotary shaft and arranged in the rotary sealing ring mounting groove. At least one spare rotary sealing ring is sleeved above the end of the rotary shaft and arranged in the rotary sealing ring mounting groove, a thrust generating mechanism is arranged corresponding to each spare rotary sealing ring and positioned in the rotary sealing ring mounting groove and provides an axial thrust pointing the main rotary sealing ring for the corresponding spare rotary sealing ring, and a positioning mechanism is used for positioning the thrust generating mechanisms to an energy accumulation position. The replacement interval of the rotary sealing ring can be prolonged more than one time by means of the novel rotary sealing structure.
Description
Technical field
The present invention relates to a kind of running shaft rotary seal structure, be specifically related to a kind of running shaft rotary seal structure that the interval of changing rotating seal ring can be extended by least more than double.
Background technique
On the existing equipment at oil hydraulic pump, motor, speed reducer, motor, motor, screw shaft etc. with rotary main shaft and needs sealing, be generally provided with running shaft rotary seal structure as shown in Figure 1.This running shaft rotary seal structure generally includes end cap 1, running shaft 2 and rotating seal ring 3, end cap 1 is provided with running shaft mounting hole 11 and rotating seal ring mounting groove 12, the end of running shaft 2 is located in running shaft mounting hole 11, and rotating seal ring 3 is set on the end of running shaft 2 and is placed in rotating seal ring mounting groove 12.But because rotating seal ring 3 only has one, and rotating seal ring is more easy to wear again with respect to other Sealing, therefore, in the situation that rotating seal ring is worn, whole sealing can only be covered to disassemble from spindle end and change, complex steps effort.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art part, a kind of running shaft rotary seal structure simple in structure is provided, it can extend the interval of changing rotating seal ring more than one times.
For achieving the above object, the present invention adopts following technological scheme:
Running shaft rotary seal structure, comprise end cap, running shaft and main rotating seal ring, end cap is provided with running shaft mounting hole and rotating seal ring mounting groove, the end of described running shaft is located in running shaft mounting hole, and described main rotating seal ring is set on the end of running shaft and is placed in rotating seal ring mounting groove; On the end of described running shaft, be set with at least one rotating seal ring for subsequent use, described at least one rotating seal ring for subsequent use is placed in rotating seal ring mounting groove, and corresponding each rotating seal ring for subsequent use is provided with a thrust generation mechanism, be arranged in rotating seal ring mounting groove, and provide the end thrust of the main rotating seal ring of a sensing for corresponding rotating seal ring for subsequent use; With a positioning means, it is positioned at thrust generation mechanism on accumulation of energy position.
As preferably, described thrust generation mechanism comprises a slide block, slide axially be arranged in rotating seal ring mounting groove and with the outer side surface rubbing contact of corresponding rotating seal ring for subsequent use; One jump ring, is arranged on the sidewall of rotating seal ring mounting groove; With a spring, its two ends difference contact is on slide block and jump ring.
As preferably, described positioning means is a screw, is radially arranged in end cap and interferes in the sliding path of slide block and spring is positioned on compress energy storage position.
As preferably, the sheathed position of corresponding each rotating seal ring for subsequent use of the end sidewalls of described running shaft is provided with an annular groove of avoiding rotating seal ring for subsequent use and running shaft to come in contact.
The present invention, compared with existing running shaft rotary seal structure, has following beneficial effect: 1, the rotating seal ring of the running shaft rotary seal structure on extension device is changed interval, and the weakest rotary seal link of equipment is strengthened; 2, rotary seal place occurs need not dismantle and can fast backup seal be filled up and be put in place after leakage of oil, and before solving, after leakage of oil, needing to shut down to change needs a large amount of parts dismounting and waste of time; 3, solve the particular/special requirement of different hydraulic mediums to sealing material, different materials seal ring can be installed and tackle different hydraulic mediums, or the dual reinforcing of seal ring of same material is installed.
Brief description of the drawings
Fig. 1 is the structural representation of existing running shaft rotary seal structure.
Fig. 2 is the structural representation of the embodiment of the present invention 1.
Fig. 3 is the I portion enlarged view of Fig. 2.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Fig. 5 is the II portion enlarged view of Fig. 4.
In figure:
1-end cap; 11-running shaft mounting hole; 12-rotating seal ring mounting groove; 13-radially screw; 2-running shaft; 21-annular groove; 3-rotating seal ring; 41-main rotating seal ring; 42-rotating seal ring for subsequent use; 51-slide block; 52-jump ring; 53-spring; 6-screw.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail.
Embodiment
Embodiment 1
As shown in Figures 2 and 3, the running shaft rotary seal structure described in the present embodiment, comprises end cap 1, running shaft 2, main rotating seal ring 41, rotating seal ring for subsequent use 42, thrust generation mechanism and a positioning means composition.
The end of running shaft 2 is located in the running shaft mounting hole 11 of end cap 1, and main rotating seal ring 41 is set on the end of running shaft 2 and is placed in the rotating seal ring mounting groove 12 of end cap.Rotating seal ring 42 empty sets for subsequent use are on the end of running shaft 1, and the end sidewalls of running shaft 2 is provided with an annular groove 21 of avoiding rotating seal ring for subsequent use and running shaft to come in contact to sheathed position that should rotating seal ring 42 for subsequent use.
Thrust generation mechanism is made up of slide block 51, jump ring 52 and spring 53.Slide block 51 slide axially be arranged in rotating seal ring mounting groove 12 and with the outer side surface rubbing contact of rotating seal ring 42 for subsequent use.Jump ring 52 is arranged on the sidewall of rotating seal ring mounting groove 12.Spring 53 two ends difference contacts are on slide block 51 and jump ring 52.Positioning means is a screw 6, and these screw 6 spiral shells are located in the radially screw 13 being opened in end cap 1, and the interfere in ends of screw 6 enters in the sliding path of slide block 51 and spring 53 is positioned on compress energy storage position.
The working procedure of the running shaft rotary seal structure of the present embodiment is as follows:
Running shaft is in the time of normal working, and main rotating seal ring contacts and seals with the end sidewalls of running shaft.Due to the existence of annular groove, empty set does not contact with running shaft rotating seal ring for subsequent use on the end of running shaft.In the time that main rotating seal ring makes rotary seal structure lose seal action because of wearing and tearing, the screw of outwarding winding is removed its interference to slide block, slide block is in axial sliding under the effect of the elastic-restoring force of spring in rotating seal ring mounting groove, and produce frictional force and drive rotating seal ring for subsequent use toward being in axial sliding near the direction of standby usage rotating seal ring, in the time that rotating seal ring for subsequent use slips away the annular groove of running shaft, rotating seal ring for subsequent use contacts with running shaft and makes rotary seal structure again play seal action.Therefore, the rotary seal structure of the present embodiment is with respect to existing rotary seal structure, and the seal ring that has extended a times is changed interval.
Embodiment 2
As shown in Figure 4 and Figure 5, when the present embodiment, on embodiment 1 basis, increase a rotating seal ring 42 for subsequent use, and correspondence is set up a thrust generation mechanism and a positioning means.
As mentioned above, in the time that main rotating seal ring and first rotating seal ring for subsequent use all make rotary seal structure lose seal action because of wearing and tearing, second screw of outwarding winding can make rotary seal structure again play seal action.Therefore, the rotary seal structure of the present embodiment is with respect to existing rotary seal structure, and the seal ring that has extended twice is changed interval.
Claims (2)
1. running shaft rotary seal structure, comprise end cap, running shaft and main rotating seal ring, end cap is provided with running shaft mounting hole and rotating seal ring mounting groove, the end of described running shaft is located in running shaft mounting hole, described main rotating seal ring is set on the end of running shaft and is placed in rotating seal ring mounting groove, it is characterized in that, on the end of described running shaft, be set with at least one rotating seal ring for subsequent use, described at least one rotating seal ring for subsequent use is placed in rotating seal ring mounting groove, and corresponding each rotating seal ring for subsequent use is provided with
One thrust generation mechanism, be arranged in rotating seal ring mounting groove, and provide the end thrust of the main rotating seal ring of a sensing for corresponding rotating seal ring for subsequent use, described thrust generation mechanism comprises a slide block, slide axially be arranged in rotating seal ring mounting groove and with the outer side surface rubbing contact of corresponding rotating seal ring for subsequent use; One jump ring, is arranged on the sidewall of rotating seal ring mounting groove; With a spring, its two ends difference contact is on slide block and jump ring; With
One positioning means, it is positioned at thrust generation mechanism on accumulation of energy position, and described positioning means is a screw, is radially arranged in end cap and interferes in the sliding path of slide block and spring is positioned on compress energy storage position.
2. running shaft rotary seal structure according to claim 1, is characterized in that, the sheathed position of corresponding each rotating seal ring for subsequent use of end sidewalls of described running shaft is provided with an annular groove of avoiding rotating seal ring for subsequent use and running shaft to come in contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385687.1A CN102606740B (en) | 2011-11-28 | 2011-11-28 | Novel rotary sealing structure for rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385687.1A CN102606740B (en) | 2011-11-28 | 2011-11-28 | Novel rotary sealing structure for rotary shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606740A CN102606740A (en) | 2012-07-25 |
| CN102606740B true CN102606740B (en) | 2014-08-13 |
Family
ID=46524385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385687.1A Active CN102606740B (en) | 2011-11-28 | 2011-11-28 | Novel rotary sealing structure for rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606740B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030127A (en) * | 1987-06-02 | 1989-01-04 | 布隆福斯造船公司 | Be used for running shaft, be used in particular for the safety installations of the tail shaft tube sealing structure of marine propuision system |
| CN1041030A (en) * | 1988-05-07 | 1990-04-04 | 布隆福斯造船公司 | The seal arrangement that is used for rotating shaft, especially stern tube seal system |
| US5209497A (en) * | 1990-09-05 | 1993-05-11 | Blohm+Voss Ag | Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shafts of a ship |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059608B2 (en) * | 2002-03-13 | 2006-06-13 | Ashbridge & Roseburgh Inc. | Installation and deployment sleeves for lip seals |
| JP5145099B2 (en) * | 2008-03-28 | 2013-02-13 | ナブテスコ株式会社 | Sealed device |
-
2011
- 2011-11-28 CN CN201110385687.1A patent/CN102606740B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030127A (en) * | 1987-06-02 | 1989-01-04 | 布隆福斯造船公司 | Be used for running shaft, be used in particular for the safety installations of the tail shaft tube sealing structure of marine propuision system |
| CN1041030A (en) * | 1988-05-07 | 1990-04-04 | 布隆福斯造船公司 | The seal arrangement that is used for rotating shaft, especially stern tube seal system |
| US5209497A (en) * | 1990-09-05 | 1993-05-11 | Blohm+Voss Ag | Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shafts of a ship |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102606740A (en) | 2012-07-25 |
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Address after: No.12, 10 road, Guanglong Industrial Zone, Chencun Town, Shunde District, Foshan City, Guangdong Province, 528313 Patentee after: Guangdong Keda Hydraulic Technology Co.,Ltd. Address before: 528313 most industrial district, Chencun Town, Shunde District, Guangdong, Foshan Patentee before: FOSHAN KEDA HYDRAULIC MACHINERY Co.,Ltd. |
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| CP03 | Change of name, title or address |